Cryptocurrency A cryptocurrency is digital money. There are many cryptocurrencies, just like there are many currencies like the Dollar, the Euro, and the Ruble.

Each cryptocurrency is running on its own blockchain, because for every currency, you need a different record of transactions. Imagine I had one Dollar and one Euro, and I spend my Dollar. The Dollar blockchain records this transaction, so that it knows the new owner and that I don’t have my dollar anymore. On the other hand, this would not affect the blockchain for all the Euros.

If you own 1 ZEN, this means there is a transaction recorded on the blockchain where you received one ZEN. This transaction is your ZEN.